小叶锦鸡儿灌丛化对典型草原群落结构与生态系统功能的影响
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丁威,王玉冰,向官海,迟永刚,鲁顺保,郑淑霞
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Effects of Caragana microphylla encroachment on community structure and ecosystem function of a typical steppe
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DING Wei,WANG Yu-Bing,XIANG Guan-Hai,CHI Yong-Gang,LU Shun-Bao,ZHENG Shu-Xia
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表1 内蒙古典型草原不同程度灌丛化草地的小叶锦鸡儿灌丛特征
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Table 1 Shrub characteristics of Caragana microphylla at light, moderate and heavy encroachment sites in Nei Mongol typical steppe
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| 灌丛特征 Shrub characteristic | 不同程度灌丛化 Degree of shrub encroachment | | 轻度 Light | 中度 Moderate | 重度 Heavy | | 数量 Number of bunches (No.·25 m-2) | 2 ± 0.5b (45) | 6 ± 0.6a (94) | 5 ± 0.9a (80) | | 高度 Height (cm) | 24.13 ± 1.45b (45) | 25.71 ± 0.91b (94) | 38.90 ± 2.23a (80) | | 冠幅 Crown (cm2) | 8 505.6 ± 1 453.0ab (45) | 6 907.3 ± 1 048.8b (94) | 13 083.9 ± 2 289.0a (80) | | 冠幅面积比 Crown area ratio (%) | 7.66 ± 1.81b (20) | 12.99 ± 2.47ab (20) | 20.93 ± 4.37a (20) | | 分蘖株数 Number of individuals (No.·25 m-2) | 25 ± 6b (504) | 32 ± 5ab (719) | 47 ± 8a (942) |
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